Metal-working machine



B. M; wg'HANsoN. METAL-WORKING MACHINE. APPLICATION FILED AUG. I9, |919.

Panama ont 24, 11922,

'2 sHEUgs-SHEET l.

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B. M. Wl HANSON. METAL woRKlNG MACHINE. APPLICATION FILED AUG. 19. |919.

1,432,853. 'Patented 001;. 24, 1922.

v 2 SHEETS-SHEET 2.

5130 ze 25 32 i/ l 24 l lll n umm n INEM mf.

Patented @et 24, 1922..

Lease BENGT M. W. HANSON, 0F HARTFORD, CONNECTICUT.

'c METAL-WORKING MACHINE.

l Application ,led August 19, 1919. Serial No. 318,533.

To @ZZ whom t /n'zog/ concern Be it known that I, BnNo'r W vI-IAN- sorua citizen of the United States,l residing at Hartforchin the county ofllartford and State of Connecticut, have invented certain new and useful Improvements in. MetallVorling Machines, of which the following is a specification.

This invention relates to shai'iei's. VI have several primary motives in view among the most importantA being the provision of effective means by' ,which I can translate an irregular mov'ementinto a regular one.i This irregular movement may `be presented by any desirable source of power such as a crank or wrist pin and the regular movement may be received by atool.y In the case ofa shaper this would be a tool utilized as its name applies' for shaping. tion with such a machine I inight observe, that I have obtained particularly important results. s

In the drawings accompanying and forining part of the present specification I have shown somewhat in detail one of the several'l forms of. embodiment `of the invention which to enable those skilled in the art to practice the same will be set forth fully in the fol@ lowing description. I ainnot restricted 'to this disclosure. I may departtherefronrin several respects within the scope of the invention defined by the claim following said description. Y

Referring to said drawings: Figure 1 is a vertical side elevation of a metal-working machine involving the invention.

Fig. 2 is a vertical sefctiononthe line.

2-2 of Fig-1.

Fig. 3 isa longitudinal section on the line 3-3 of Fig. 1. v v

Fig. l. is an elevation of associated yrockers and certain' co-operating parts hereinafter more particularly describe y v As I havealieady noted the invent-ion constituting the subject matter of the present' case is susceptible Vof general use although I have indicatedseveral fields where it` is of especial advantage.r- In the drawingsI have shown a part of a"shape r as it islrnown.v

For instance in Fig. f1 I have shown the hollow head or column 2 of a Shaper'. This frame-member or `head 2 constitutes a` convenient casing for supporting and enclosing certain of the elemei'itsof the structure.

vThere is` naturallypower to be applied In connecand although this may be of any convenient character I will describe the form shown which is satisfactory. There is also a part to be operated which is assumed in the present case `to be a tool as I will later explain. rIhe means shown for transferring the effect from the power-operable member itself to the part which is to be operated, involvesI as shown two rockers or levei's as 3 and fl which may be properly considered as the primary andthe secondary rockers or levers. The primary lever 3 in the present case is directly operated as by the crank pin or eccentric stud 5 on the rotary disk 6, the outer end of the stud being seated in a longitudinal slot 7 in the tail or lower branch of the lever or rocker 3 as shown clearly in Figs. 1, 2 and e. As shown the disk 6 is rigid with the shaft S; for instance it may be fastened thereto as by the pin 9. The shaft 8 is supported by the frame member or-head 2, extends thereinto and is furnished as4 illustrated at its outer end with a pulley 10 constituting a suitable driver for rotating the shaft 8 and the disk 6 and the consequent revolution of the pin loi stud 5, and the oscillation of the rocker or lever 3, This lever or rocher 3 is shown as somewhat bent or of elbow forni, having practically at the nnction of its two branches. an' opening to receive the pivot 11 sustained by suitable bearings upon the opposite sides of the frame member or Y ing through the side lwalls of the frame member orv head 2, the inner ends of `the bushings 14 as shown beingpractically in contact with the opposite side faces of the hub 12. The .frame member or head 2 as shown supports on its front side a toolcarrier 15 connected as by 'a link 16 with the forward branch 4of the secondary lever 4;. As illustrated the tool-carrier 15 sustains a tool 17 which is assumed to be a shaping tool. It may be clear although it will be made more so hereinafter, that the rocker or lever'3 transmits its effect to the rocker or lever 4 and the latter through the link 16 reciprocates the carrier 15 to effect the desired action of the tool which action vvon, Ithe screw 2 5,

i should be a regular one. This action of the tool however, 1s at the same time an ad justable one and the adjustment can be instantly brought aboutwhile' the machine isin action which in a shaper as I.understand. is not possible at the present time.

The adjoining brancheso'lf theI two rockf ers 3 and 4 aie desir-ably"inter-fitted, and this lA fan obtain by di.spos`inir..the rear branch ol the levenor'roekcn fl, bctwcentheH sides or checks 19 ot' thefliuont or; :torw-ard` branch o'l the primary rocker 2l. I also provide 'for adjustably connecting- 'he.- two rochers so that the strol-:e ol. the loinvard or front one can be; regulated oradjusted' and; this adjustment. l obtain in` a: very` desirable way. The pivot on pin 1.3. which is shown as a` convenient support tonthei forward rocker. or leverl is longitudinally bored as at 19 from. one end; toi a point alittle beyond its-center as best shown in Fi This bore.11).constitutes a coni-'ement means for receiving the shaft; QQiihe/fliorward or.` onterV end o'liwhichy sis-shown is provided 'for easeot' manipulation. with a inobor linger-- piece pinned on otherwise `tenerli theref to. 'llhe shaft 90r rocks as wills be under;-

stood andiitnturns in beai'iugr'slceves asiQf,

littecli in, the axial;V borc..1 Asshown Lthe shalt Q0 hasfiixed to..itsiinnerondithe bevel gear 23 in,` mcSln withal bevel'pgear 2l. fixed eter-endingY rearwandly through the hub, pont-ion ot the rocker 4h The screwV thereforeswinggjs with the rocker 4t and extends. into a; long itudinal slotas 2G (Figr) in the nearlnfanch ot the semmdary rocken 4t honing threagleilat l? in saidgslot 26.to.ucccive the nutQS whiclrhas a sliding); movement in, the. slot 26 the. nut however beine', incapable oit rotation within said slot. The pivot o1' pin 13 as showin is made rigidavith. the rockic r 4, as .by tb e screw Ll tapped,throughtheihnb olv the rocker and engaging' the pivot or pinr Tt will there tore. be clean that upon. theturning ot the. screw or shaft 25. the. nut 2S will be. adr. jnstedy longitudinally ot the slot and` this particularadjustment it1will-hc evident; can` be` secured th rough the, turning oft the knobor4 thumb piecel 21Y and. intermediate de-y scribedparts. This.adjustinentlmightnote can be securedwhile.` the machine is in. nio-. tion which is an important consideration In shaping machines` and those ot a. like character ithasfheretotone always beenynecessary torstopzthe machine. win-inE the adjusts. ment ot a. toolsuch as 17 or. some; similari result is tobe-obtainecl;

The-sides or cheeks 18v ot thev iiorwaid or innen branch o t theprimary or main rocker 8, .haivewas shownr longitudinal. slots 29g inl exact; transverse register with. each other,`

it being` understood otx coursethat the rearl branch 0.1i erm.' O-i the Secondary rocker le supported between these branches or cheeks 18. The nutu28 it will be evident has a slid-- ing nonaotative movement in the slot QG under the action of the screw 27 through the primary action as shown. of the knob or linger pieceu2'l.. This blocklilre nut 28 as illustrated has two laterally coincident pro. jections as 30 which extend freely practically centrally through the slides or blocks 31 fitted 'for free sliding or reciprocative movement. in4 the respective slots ,25). lt is evident that opposite. faces of the blocks 3 1 i are y invy flatwis'e contact with. opposite si de walls` of the two slots 29 in. which as wiil hereinafter appear they have -aslidingj motion, `The blocksl .may be held against acciilental displacement inI any desirable manner asby the washersBQ fastened suitably tothe outer, projecting ends of the two studs or pivots. 30 as shown best in Fig. 3. It migg'htbe. noted at, thistime that during! the oscillation of the primary rocker 3 the blocks, 3l. reciprocate or vtravel baci; and 'forth in their ,co-operating; slots .29. The. rocker or, leven 3.. asfl have already statedis powerfoperatedinlthe present case,V and through, the blocks4 31; and the nut 2S owingto the adjustmentof the latter the i movementvor.,strokeY of the rocker-or secondary` lever 4l, may be regulated to correspondingly govern through the described parts the. amount, olfV n iovementy of the` tool L7. rklthough the double rocker or levery construction Iy am now.. describingl is 4highly satisfactory it may. not always be necessary to-usethe saine.l "Ifliat .is to sayivwhile one oit my, important advantages is the productionl ot a Inachinaot a uniform, power derirec'tfromapart whiclrhasa variable move- 1nent, this may not always be*y necessary.' In like'cases many othen deyiationsmay be adopted. y

It will be assumed thattlie shaft 8 is loeing rotated, by the pulley l() or otherwise. This `as ai consequence cansestljie rotation. of the disk 6 and the resultant revolution ol" the wrist or crank pin 5 tlie'bloclA ot which in its reciprocation in the slot 7 of7 the rear arm oft the lever 3 causes said lever to roch or osoillate. The forward branch of this lever being;` connected with the rear branch of the lever 4: causes. in, tnrinthe oscillationA of the lever lf andthe consequent movement oit the tool tlnjough` the agGIlCY 0f. th@ de" scribed, connections. During the oscilla-, tion of the leverl 3 the blocks 31 slide freely back and; forth, in their respective slots29. andy as a consequenceof this itwill be. evident that the irregularity nr moven `ment of the crank pin is: converted into amore regulan movemetat. the placedesred.. The amount of this movement Cani be. in s tantly. changed as I havevirtnally. already explained through thex turning of vthe knob or `finger piece .2.14, While the. machine sin action. It will be obvious that the machine comprises broadly a primary rocker and a secondary rocker oue of these rockers having movable therewith an adjustable element which has a sliding connection AWith the other and although this adjustment is accomplished by means in connection With the secondary lever and although the slidable member is sustained by the primary ,rocker to which power is usually applied,

this may not always be necessary. rIt is however as I have already observed a highly advantageous point resulting in the conversion of an irregular into a more regular motion.

It will be evident that the increased leverage of the primary rocker 3 occurs at the point Where the crank motion decreases in speed and as a consequence I can obtain a more uniform motion of a cutting or like tool 17 than would otherwise be possible. I have shown in Fig. 4 by the arcuate lines 40 and 4l this effect. The line 40 is struck from the center of motion of the primary rocker 3 While the line 41 is struck frolnthe center of motion of the secondary rocker 4.

What I claim is:

A machine of the class described coinprising a primary rocker, a secondary rocker, the ltwo rockers having branches which overlie each other, the overlying Y branch ofthe primary rocker having longitudinally slottedsidesto receive the corresponding' branches of the companion rocker, slides supported for free movementin said slots, a turnable shaft extending` through the center' of motion of the secondary rocker, a shaft supported by the overlying` branch of the secondary rocker and having a geared connection with said other shaft,` a nut having a threaded feed connection With said second shaft and pro vided With lateral extending pins projectinp; through the respective slides.

In testimony whereof I alix my signature in the presence of two Witnesses. I BENGT M. WV. HANSON. `Witnesses:

HERBERT S. BULLARD, HEATH SUTHERLAND. 

